For two decades, Florida's citrus groves have been quietly dying — victims of a bacterial disease that no pesticide, quarantine, or replanting effort has been able to stop. Now, science is offering what nature and convention could not: trees rewritten at the genetic level to resist what has proven unbeatable. The hope resting on gene-editing technology is not merely agricultural — it is the hope of communities, livelihoods, and a way of life that has defined a region for generations.